The GP and the specialist.
D000006:Abdomen, Acute / Q000628:therapy; D003109:Colonic Diseases, Functional / Q000628:therapy; D004381:Duodenal Ulcer / Q000628:therapy; D005194:Family Practice; D005759:Gastroenteritis / Q000628:therapy; D005767:Gastrointestinal Diseases / Q000628:therapy*; D006471:Gastrointestinal Hemorrhage / Q000628:therapy; D006396:Hematemesis / Q000628:therapy; D006551:Hernia, Hiatal / Q000628:therapy; D006801:Humans; D007565:Jaundice / Q000628:therapy; D008551:Melena / Q000628:therapy; D012007:Rectum; D012017:Referral and Consultation